PLAESE HURRY Which of the following were reasons for the Soviet Union’s collapse? i. Satellite nations declared independence.

ii. The Soviet Union could not compete economically with the West.

iii. Soviet citizens demanded political and economic reforms.

iv. The United States beat the Soviet Union in a violent battle at Stalingrad.

A.

i. and ii. only

B.

i. and iv. only

C.

iii. and iv. only

D.

i., ii., and iii.

How long does it take hair to grow 8 inches?

If you could drill a hole straight to the center of the earth, and keep track of what the hole is going through, youwould find: a) you would go through one sort of material, and then a different, denser material, and then a still-different, still-denser material, because the planet is made of concentric layers, sort of like an onion.b) you would go through one sort of material all the way to the center, because the planet is all mixed up.c) if your hole started at the north pole, you would go through different layers of different materials, but ifyour hole started at the equator, you would go through one sort of material all the way to the center.d) if your hole started at the equator, you would go through different layers of different materials, but if yourhole started at the north pole, you would go through one sort of material all the way to the center.e) you would strike diet pepsi when you got to the center.

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks